What can I do if my children were abducted by non-custodial parent in Staten Island, New York?  

If you do not have a document that shows that you have custody of your kids, go to the court house and obtain the records showing that you have custody. There has to be some record that was made relating to your custody. There should be some records that you can obtain either at court or ACS.  I suggest obtaining the ACS records showing that your wife was removed from the home and explain the situation to the police.  While the police are searching for your kids, you can let them know that you will provide them with the documents. However, if you show that your kids are in some danger, then the police should take some action as they have a duty.  Go to the police immediately and put your concerns in writing as god forbid something happens to your kids, you will have a paper trail to blame the police for not following up.